Description

Product Core Brief

Model: XO08R2
Brand: ABB
Part Code: 1SBP260109R1001
Series: AC31 Series modular PLC system
Core Function: Convert controller logic signals to relay contact outputs for field actuator control
Type: Digital Relay Output Expansion Module
Key Specs: 8 independent relay channels, 2 A continuous rating per channel, galvanic isolation
Condition: New Surplus, non-refurbished

⚠️ Active production model, standard factory lead time applies, limited spot stock available

Product Introduction

Unused spare I/O capacity often forces cabinet redesign during plant upgrades. The ABB XO08R2 serves as expansion hardware for AC31 modular controllers, extending digital output capacity via side-mounted bus connection.

Each channel uses isolated relay contacts to separate low-voltage controller logic from external field circuits. This isolation protects the main CPU from surges generated by solenoids, indicator lamps and small contactors. Visible front-panel LEDs display real-time channel status for rapid on-site troubleshooting. The module snaps directly onto DIN rail and links to adjacent AC31 modules without extra bus cables.

Key Technical Specifications

Parameter	Specification
Full Order Code	XO08R2 / 1SBP260109R1001
Module Category	Digital Relay Output Extension
Output Channels	8 independent normally open relay outputs
Rated Contact Load	2 A / 250 V AC per channel
Logic Supply Voltage	24 V DC
Isolation	Galvanic isolation between logic side and field contacts
Status Indication	Individual LED for each output channel
Mounting Method	Standard 35 mm DIN rail
Operating Temperature	0 °C ~ +55 °C
Storage Temperature	-40 °C ~ +75 °C
Dimensions (W × H × D)	96 mm × 32 mm × 80 mm
Net Weight	Approx. 120 g
Compatible Platforms	ABB AC31 Modular PLC controllers

ABB XO08R2 1SBP260109R1001

Installation & Configuration Guide

Pre-Installation (Estimated: 10 min)

⚠️ Safety Reminders:

Schedule maintenance window and execute lockout-tagout procedures
Disconnect 24 V DC control supply before module modification
Confirm all external field loads are de-energised
Capture photos of existing module layout and wiring reference

Tools required:

ESD wrist strap and anti-static work surface
PH0 cross-head screwdriver
Digital multimeter
Mobile camera for recording wiring layout

Backup tasks:

Export controller application program and save locally
Note existing I/O address mapping for subsequent project adjustment

Old Unit Removal (Estimated: 12 min)

Label each field wiring terminal clearly before disconnection
Unscrew terminal screws and separate all external cables
Unlock the side bus connector between adjacent AC31 modules
Push down the DIN rail retaining clip and slide the module outward
Inspect terminal blocks for oxidation or overheating traces

⚠️ Do not pull cables by wire insulation; always grip the conductor terminal.

New Module Installation (Estimated: 15 min)

Wear ESD protection while unpacking the XO08R2
Verify printed part number matches required spare
Slide module onto DIN rail until the bottom clip locks firmly
Push side bus connector to establish communication with main controller
Reconnect field wiring following labelled terminal sequence
Complete pre-power checklist:

☑ DIN rail lock fully engaged

☑ Side bus interlock properly connected

☑ All terminal screws tightened

☑ No loose strands inside terminal housing

Power-On & Function Test (Estimated: 25 min)

Pre-power inspection:

Measure 24 V DC supply voltage within allowed tolerance
Confirm no short circuits on external output wiring

Test steps:

Restore control power supply; keep field loads disconnected initially
Download updated project with newly assigned output addresses
Force each output channel ON and verify corresponding LED activates
Reconnect field loads and carry out full functional sequence test
Run continuous monitoring for minimum 30 minutes to detect abnormal heating

Troubleshooting tips:

No channel LED response: Check bus interlock and project I/O configuration
Relay clicks but load fails to operate: Verify external power supply for field devices
Random channel faults: Inspect for loose wiring or inductive load back EMF

Frequently Asked Questions (FAQ)

Q: Can XO08R2 be mixed with other AC31 I/O modules on the same DIN rail assembly?

A: Yes. This expansion unit connects to any AC31 main CPU or existing expansion modules via the built-in side bus. Maintain the original module sequence when replacing units.

Q: Is hot swapping supported while the controller remains powered?

A: Hot removal is not recommended. Live disconnection of the side bus can trigger controller faults or corrupt running logic. Always cut the 24 V control supply first.

Q: What precautions apply when switching inductive loads such as solenoid valves?

A: Inductive loads generate voltage spikes during switch-off. Fit freewheeling diodes or RC suppressors across coils to extend relay service life. Without suppression, relay contact wear accelerates rapidly.

Q: Can I connect multiple loads in parallel to a single relay channel?

A: Sum total current must stay below the 2 A per-channel continuous rating. Track inrush current at switch-on to avoid contact welding.

Q: Will existing program I/O addresses change after adding this module?

A: Address mapping depends on physical module position on the rail. If installed in a new position, update variable addresses inside the controller project and re-download logic.

Q: Are direct equivalent replacement modules available if XO08R2 faces future phase-out?

A: ABB has not announced discontinuation. When sourcing alternatives, confirm bus protocol and channel quantity; many newer series modules cannot be directly swapped without program changes.

Q: What conditions void the product warranty?

A: Warranty excludes damage caused by overload current, surge voltage, incorrect wiring, moisture ingress, or operation beyond published temperature limits. Every unit undergoes bench testing before dispatch; test documentation can be supplied on request.